Energy Flow in Thin Shell Implosions and Explosions
Name
20ja081_full.pdf
Size
1.37 MB
Format
Adobe PDF
Checksum (MD5)
9092efbfcf3790bf1f8cd018f9b15c5d
Author(s)
Ruby, J.J.
Rygg, J.R.
Chin, D.A.
Gaffney, J.A.
Adrian, Patrick J.
Forrest, C.J.
Glebov, Y.Yu.
Kabadi, Neel V.
Nilson, P.M.
Ping, Y.
Date Issued
October 2020
Journal
Physical Review Letters
Publisher
APS
Abstract
Energy flow and balance in convergent systems beyond petapascal energy densities controls the fate of late-stage stars and the potential for controlling thermonuclear inertial fusion ignition. Timeresolved x-ray self-emission imaging combined with a Bayesian inference analysis is used to describe the energy flow and the potential information stored in the rebounding spherical shock at 0.22 petaPascal (2.2 Gbar or billions of atmospheres pressure). This analysis, together with a simple mechanical model, describes the trajectory of the shell and the time history of the pressure at the fuel-shell interface, ablation pressure, and energy partitioning including kinetic energy of the shell and internal energy of the fuel. The techniques used here provide a fully self-consistent uncertainty analysis of integrated implosion data, a thermodynamic-path independent measurement of pressure in the petaPascal range, and can be used to deduce the energy flow in a wide variety of implosion systems to petapascal energy densities.
Description
Submitted for publication in Physical Review Letters
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Persistent DSpace Link
DOI of Published Version
doi.org/10.1103/PhysRevLett.125.215001
https://doi.org/10.1103/PhysRevLett.125.215001
